Coupling for pipes and the like.



B. DOLENSKY.

COUPLING FOR PIPES AND THE LIKE.

APPLICATION FILED NOV. 23, 1908.

1,014,053. Patented Jan.9,1912.

UNITED STATESQPATENT OFFICE.

EUGEN DOLENSKY, OF PRANKFORT-ON-THEMAIN, GERMANY, ASSTGNOR TO THE COR- PDRATION OF DELLWIK-FLEISCHER WASSERGAS-GESELLSCHAFT M. B. 11., OF

FRANKFORT-ON-THE-MAIN, GERMANY.

COUPLING FORTIPES Ann THE LIKE.

Specification of Letters Patent."

Patented Jan. 9,1912.

Application filed' November 23, 1908. Serial No. 463,994.

T 0 all whom it. may concern:

Be it known that I, EITGEN DoLENsKi', engineer, and resident of Frankfort-on-the- Main, Germany, (whose. post-oflice' address is Wielandstrasse No. 40,) have invented new and useful Improvements inv Couplings for Pipes and the Like, of which the follow- .ing is a specification.

Ordinary plain sleeve couplings for pipes have the disadvantage that the pipe ends when connected are capable of axial movement with reference to one another and furthermore, that special devices are necessary in order to force the packing'material into the cylindrical space betweenthe pipe ends. ()n the other hand flanged couplings have the disadvantage thatthey are'expensive if thefianges project from sleeves which are welded to, or otherwise integral with the pipes, while the packing of the adjoining faces is uncertain.

The coupling of the present invention presents the advantages of both a sleeve coupling and a flanged coupling and also affords particular advantages n'ot possessed by either ofthose two types of coupling.

The invention is illustrated in the accompanying drawing.

A portion of the pipe a near the end is enlarged to form a cyllndrical'sleeve Z) and from this sleeve there extends a divergentconical portion 0. The end f of the other pipe .2 ,inaintains its original cylindrical form and is provided with a conical enlargement 9 which corresponds to the conical enlargement c of the other pipe end. In rear ofthe conical enlargement 9 there is a furt-her enlargement h which constitutes a spring bead extending around the outer surface of the pipe or tube. at is packing material and p and q are flanges or rings which are placed on to the pipes to be connected and drawn together by means of screw bolts .9. These rings or flanges '72 and 9 lie respectively against the enlargements c and h as shown in the drawing. It .will be particularly noted that theconical portion of eachpipe section is formed as an enlarge-.

ment or expansion ofthe body of the pipe of substantially/the same thickness as the said body portion, that is to say the enlargements ferming the conical seats for the packing on the one hand and for the flanges orelamping rings on the other are'formed in the pipe ends without materially thickening the walls of the pipe sections.

The arrangement affords the following advantages. I Inasmuch as the sleeve-like enlargements 0 and it serve as bearings for the flanges 7) and Q, the cost of the coupling as compared with one having solid sleeves is considerably less. The coupling may be rendered exceedingly strong and efiicient without the necessity of machining the packing faces in consequence of the packing material m being forced by the pressure of the screw bolts with wedge-like action against the tube surfaces. The coupling possesses spring-like action owing to the fact that. the head it possesses a notable amount of resiliency. Furthermore, the screw bolts 8 may be of a greater length than is the case when the flanges are formed on the outer tube ends, and in consequence of this its elasticity comes more into play. This spring action not only serves to take up the extension and contraction of the tube due to heating and cooling, but materially assists in rendering the coupling tight and permits of automatic adjustment. The coupling can with equal advantage serve for tubes of either large or small diameter. The jointing operation is exceedingly simple for all diameters of tubes.

Now what I claim and desire to secure by Letters Patent is' the following:

1. A pipe coupling comprising an out};

tion and an adjacent cylindrical-section to form a packing chamber tapering-in oppqsite direct-ions, between the respective menu'- bers, said telescopin member having a shoulder to the-rear 0 said sections, a packing substantially filling said chamber, rings engaging thev outer surfaces of the diver:

gent portion of the first member and the shoulder of the second member-respectively, and bolts connecting said rings.

3. In couplings for pipes and the like the combination of a conical sleeve coupling one part of which is enlarged to a'cylindrical sleeve with. a divergent conical extension While the other part is cylindrical and provided with a conical elastic enlargement with a flanged coupling substantially as and for the purpose described.

4. In couplings for pipes and the like the combination of a conical sleeve couplin one part ofwhich is enlarged to a cylindrical sleeve with a divergent conical extension while the other part is cylindrical and provided with a conical elastic enlargement with flangesarranged on the conical parts of the pipe ends, substantially as and for the purpose described.

' 5. In couplings for pipes and the like the combination of a conical sleeve coupling one part of which is enlarged to a cylindrical sleeve with a divergent conical extension while the other part is cylindrical and provided with a conical elastic enlargement with flanges arranged on the conical parts of the pipe ends, and connected by screw bolts substantially as and for the purpose described.

6. In couplings for pipes. and the like the combination of a conical sleeve coupling one part of which is enlarged to a cylindrical sleeve with a divergent conical extension while the other part is cylindrical and provided with a conical elastic enlargement with flanges arranged on the conical parts of the pipe ends and connected by long screw bolts.

In testimony, that I claim theforegoing as my invention, I have signed my name in presence of two witnesses, this sixth day of November 1908.

EUGEN DOLENSKY. 

